精英家教網 > 高中英語 > 題目詳情

It is generally believed that we are getting cleaned when we step under a shower. We are, but we’re also giving a home to lots of tiny little creatures we didn’t even know about. A shower head carries thousands of bacteria called Mycobacterium. These can cause problems like coughs and tiredness, and a general feeling of being sick. When you turn on the water, the bacteria go from the shower head onto and into your body.

This is a finding of Norman R. Pace and his team at the University of Colorado, in the US. Pace's team looked at 45 shower heads in nine American cities. They discovered that 30 percent of them had large amounts of flying Mycobacterium.

But Pace said that they pose few threats to the health. Only those with a weak immune system might need to worry．He told the New York Times that the bacteria are not as unpleasant as might be thought. He said that having a shower is no more dangerous than anything else we do in the morning.

But for those who feel sick about the idea of all those microorganisms (微生物), he had some advice. Let the water run for 30 seconds before getting into the shower. Why? The number of bacteria is smaller than that when the water is just turned on. If that seems like a waste of water, he added that you could also change your shower head every few months.

However, Pace had good news too. He has also been testing the air in US subways. Apart from iron particles (粒子), which are ground off the track by the wheels of trains, subway air is fresh. The reason is that a train’s movement pumps fresh outdoor air into the tunnels.

1.From the finding of Norman R. Pace, after taking a shower, we might cough or feel tired because ________.

A. it’s easy to get a cold when taking a bath

B. the shower head carries many bacteria causing illness

C. we don’t get cleaned while showering

D. we don’t get a weak immune system

2.We can learn from the third paragraph that ________.

A. the bacteria always threat people’s health

B. there is no need to fear microorganisms for people with strong immune system.

C. the bacteria always threat people’s health when people have a shower

D. it is better to do some exercise in the morning than have a shower.

3.What contributes to fresh air in US subways?

A. The train’s movement. B. Iron particles.

C. Train wheels. D. Air conditioners on the trains.

練習冊系列答案
相關習題

科目：高中英語 來源：江西省南昌市2016-2017學年高一下學期第三次月考英語試卷 題型：短文填空

Born in a poor acting family, Charlie Chaplin got trained in acting as soon as he could speak and walk and showed an 1. (astonish) talent as a performer . Unfortunately, his father’s death left his family even 2.(bad) off. But by his teens, through his hard work and humor , Charlie 3. (become) one of the most popular child actors in England. He could act the fool doing ordinary everyday task, 4. no one was bored watching .Later on, Charlie wrote, directed, and produced the films he 5. (star) in. The little tramp, a social 6. (fail) with a black hat, was one of the most outstanding characters he had ever played. His subtle acting 7. (bright) the lives of Americans and British and made people laugh at 8.time when they felt depressed, so they could feel more content 9. their lives. In 1972, he 10. (award) a special Oscar for his excellent work in films.

查看答案和解析>>

科目：高中英語 來源：貴州省招生適應性考試英語試卷 題型：閱讀理解

Japan is a mysterious land of technological wonders, but the latest is a relatively simple solution to an age-old problem faced by beginners and professional chefs alike.

Grocery stores across the country are about to start stocking onions that won’t make people cry. The new tear-free onion is called the Smile Ball, which is a pretty adorable name for a vegetable, and it’s an onion carefully engineered to not irritate (刺激) the eyes of people who cut into it.

Regular onions release a gas when their cells are damaged and that gas irritates people’s eyes and make them tear up. The Smile Ball onions release no such a gas, so they can be chopped easily. They are also sweet like fruit when eaten raw.

The scientific advancement of the tearless onion is not free, however. Smile Balls, developed by the Japanese producer House Foods, will cost about $4.30 for a pack of just two when they go on sale in supermarkets across Japan. That’s about double the cost of a normal onion, but it might be worth the extra money for those who are particularly sensitive to traditional onion gas. Earlier test sales of the tear-free onions were held in Tokyo, with the onions selling out quickly.

1.What do the people say about tear-free onions?

A. They’re too expensive to afford.

B. They’re sweeter than candies.

C. They're especially suitable for kids.

D. They’re worth buying, though expensive.

2.What can we learn about the Smile Ball?

A. It never gives off a strong gas.

B. It has a pretty look.

C. It belongs to a new kind of fruit.

D. It rarely goes bad.

3.What’s mainly discussed in the last paragraph?

A. How to produce tear-free onions.

B. Tearless onions are more popular.

C. The development of House Foods.

D. People are sensitive to tearless onions.

4.What can be the suitable title of the text?

A. Say Goodbye to Regular Onions

B. Tear-free Onions vs Regular Onions

C. Onions That Don’t Make You Cry

D. The Future of Tear-free Onions

查看答案和解析>>

科目：高中英語 來源：河北省石家莊市2017屆高三5月聯(lián)考英語試卷 題型：閱讀理解

Retired nurse Sue Collins was just beginning the second length of her local pool when her morning swim suddenly became anything but a pleasure.

Two months ago Sue, 69, who has never suffered from asthma or any other breathing problem in the past, suddenly found herself hard for breath.

“I felt as if my throat and oesophagus (食道) were closing up,” says Sue.

Sue is convinced the problem is related to the indoor swimming baths. “I spend half the year in Turkey and swim every day outside in a pool or the sea there and never have this problem,” she says.

She may be right, because although a trip to the pool is the perfect exercise for many, the chlorine (氯氣) used to keep the water free from germs can lead to problems.

But in most cases it’s not the chlorine that causes problems, but the by-products formed when chlorine interacts with other substances — and this is mostly due to people not showering before they enter the pool.

“This then poisons the water for them and for others,” says Dr. Hull. “The chlorine interacts with sweat and urine(尿素) on the skin and forms by-products called chloramines that float above the surface as a gaseous solution that can be inhaled in.”

Chloramines are heavier than air so hang over the water where they are easily breathed in. Some believe they may cause lung disorders. A Swedish study in 2013 examining the health of 146 workers at 46 indoor pools found that 17 per cent had airway trouble at work — but no problems at home.

As Dr. Hull says: ‘People need to remember that showering isn’t just for them. It is for the greater good.’

1.Where did Sue suddenly suffer from asthma?

A. In an outdoor swimming pool. B. In the sea.

C. In an indoor swimming pool. D. At home.

2.Why should we put chlorine into the water of the pool?

A. To keep the water warm. B. To kill the germs in the water.

C. To make the people easy to breathe. D. To stop the possibility of asthma.

3.Taking a shower before swimming in the pool is to ________.

A. stop the interaction between the chlorine and sweat and urine on the skin

B. make the swimmer feel comfortable

C. obey the rule of the pool

D. stop people from breathing in the chlorine

4.What’s the purpose of the passage?

A. To show how to avoid asthma.

B. To explain chloramines’s usage.

C. To help people cure asthma.

D. To tell people why to take a shower before swimming in a pool.

查看答案和解析>>

科目：高中英語 來源：陜西省咸陽市2016-2017學年高二下學期第三次月考英語試卷 題型：完形填空

Reading and learning new words is about finding their meaning and use within a passage. The meaning of unknown words which you _______ in your reading sometimes can be known by their_______, that is, their contexts. The context of the sentence can tell us the part of speech(詞性) of the _______word. Using the context of the paragraph to define unknown words can also be_______.

Readers often have trouble because they understand the sentence word by word but _______ meaning of a word, when they should identify the way it has been used in the passage.

One consideration in using the context is to determine the unknown word's part, of speech. The words around the unknown word can give you _______. Once you know if the word is a noun or an adjective, it is often enough for you to _______ reading without having to stop to look up the meaning of the word. After coming across the word a few more times, you will know its meaning more _______than if you had just looked it up.

Comparison clues indicate that two or more things are _______. A comparison is possible because the known and unknown words have ________. Words likewise show you that comparisons can be made.

________ clues tell you that an example of an unknown word follows. Example clues are usually ________ by the following words and phrases: such as, such, other, for example, and like.

To find meanings from text-based clues, you should look for clues in the sentence. A second kind of clue does not ________ on specific words to indicate meaning. This kind of context clue is called framework-based clue. Your knowledge of the meanings of surrounding words ________ you discover the meaning of a word or sentence. Common ________and your knowledge of the parts of speech also help in defining unknown words. For example: The angry driver shouted vehemently during his fight with the other driver. What does “vehemently” ________? You know what ________ means, and you know how people ________ when they argue. From this, you can ________ out that vehemently has something to do with strong ________ or intense feeling.

1.A. take down B. look up C. come across D. pick out

2.A. sentences B. words C. topics D. surroundings

3.A. unknown B. abnormal C. familiar D. negative

4.A. unique B. natural C. helpful D. common

5.A. incorrect B. inconvenient C. different D. satisfactory

6.A. cases B. reasons C. effects D. clues

7.A. translate B. interview C. continue D. examine

8.A. strangely B. uncertainly C. potentially D. firmly

9.A. alike B. meaningful C. proper D. great

10.A. properties B. similarities C. possibilities D. personalities

11.A. Popularity B. Consideration C. Example D. Comparison

12.A. affected B. adjusted C. changed D. introduced

13.A. focus B. spend C. carry D. rely

14.A. prevents B. helps C. tells D. displays

15.A. point B. taste C. awareness D. sense

16.A. mean B. use C. contain D. complete

17.A. angry B. grateful C. happy D. anxious

18.A. act B. say C. take D. think

19.A. come B. figure C. feel D. set

20.A. demand B. ambition C. attitude D. emotion

查看答案和解析>>

科目：高中英語 來源：山西省2016-2017學年高一6月月考（月考八）英語試卷 題型：七選五

Why play sports? You might say “to get exercise” and you’d be right.

To have fun? That’s true, too. But there’s more. 1.According to the Women’s Sports Foundation, girls who play sports get a lot more than just fit.

Girls who play sports do better in school. You might think that athletics will take up all your study time. 2.Exercise improves learning, memory, and concentration, which can give active girls an advantage in the classroom.

Girls who play sports learn teamwork and goal-setting skills. 3. When working with coaches, trainers, and teammates to win games and achieve goals, you’re learning how to be successful. Those skills will serve you well at work and in family life.

Sports are good for a girl’s health. In addition to being fit and keeping a healthy weight, girls who play sports are also less likely to smoke. And later in life, girls who exercise are less likely to get breast cancer or osteoporosis(骨質酥松癥).

Playing sports improves self-confidence. 4.Why? It builds

confidence when you know you can practice, improve, and achieve your goals. Sports are also a feel-good activity because they help girls get in shape, keep a healthy weight, and make new friends.

5.Playing sports can reduce stress and help you feel a little happier. How? The brain chemicals released during exercise improve a person’s mood. Friends are another mood-lifter. And being in a team creates tight bonds between friends. It’s good to know your teammates will support you----- both on and off the field!

A. Exercise cuts the pressure.

B. Sports teach valuable life skills.

C. Regular exercise increases quality of life.

D. In fact, there are at least five more reasons.

E. Girls who play sports feel better about themselves.

F.Playing sports offers children more than just physical benefits.

G. But research shows that girls who play sports do better in school than those who don’t.

查看答案和解析>>

科目：高中英語 來源：福建省三明市2016-2017學年高二下學期第二次月考英語試卷 題型：完成句子

1.他忽然想到那棟樓的電梯有故障。

It __________ to him that the lift in that building was __________ _______ __________.

2.總統(tǒng)宣布新的政策后，他們很失望。

They were much __________ __________ after the president announced the new policy.

3.我是去年在巴黎認識他的。

I ____________ ____________ ______________in Paris last year..

4.只有在那時我才意識到我們的力氣都白費了。

Only then _________ ________ ____________ our efforts were _________ _________.

5.被那個奇怪的聲音吸引，他掛斷了電話。

__________ by the strange sound, he __________ ___________.

6.我們需要大量的援助。

We are ___________ __________ ____________ large amounts of aid.

查看答案和解析>>

科目：高中英語 來源：陜西省2016-2017學年高一（重點班）下學期第三學月考英語試卷 題型：單項填空

The best way to deal with an impolite person is to______him.

A. ignore B. neglect

C. omit D. overlook

查看答案和解析>>

科目：高中英語 來源：新疆克拉瑪依市2017屆高三7月月考英語試卷 題型：閱讀理解

If you’re shopping around for a new laptop to start the year off right, consider one of these following picks for budget-conscious students.

For Chatty Cathys

Sony’s 15.5” VAIO E Series laptop ($399.99) has a second-generation Intel Core i3-2370M processor, 4GB of system memory (RAM) and 500 GB hard drive. Built into the machine is an HD webcam to make it easy to have a video chat with family and friends. And while the camera has a microphone, integrated Bluetooth means you can also wear a headset for even clearer audio. This Windows 7 Home Premium laptop also includes a DVD burner, ACID Music Studio and more.

Math blaster

Students studying math or statistics or business might appreciate a laptop with a dedicated numeric keypad along the right-hand side of the keyboard. That’s what you’ll find in Toshiba’s satin black 15.6-inch Satellite laptop ($399.99). You’ll also find one USB 3.0 and 2 USB 2.0 ports. This entry-level PC has a second-gen Intel Core i3-2370M processor, 4GB of system memory and 500 GB hard drive.

Personalize that PC

If you’ve got a bit more cash to spend, the newest Dell Inspiron 15R ($499.99) delivers a lot of bang for the buck. You get 6GB of system memory, 500GB hard drive. But students might also like the option to change up its look. While the laptop comes standard in silver, you can personalize it with additional lids for $30 a piece (e.g. red, blue or pink). Other highlights include Bluetooth.

Bigger is better

Especially if it’s going to be used primarily as a desktop replacement, a larger screen laptop is the way to go. For $449.99 you can pick up a 17.3-inch HP Pavilion laptop, with a good-looking LED-backlit high-definition widescreen display (1600 x 900 resolution) ideal for movies, games and photos. This computer houses a second-gen Intel Core i3 processor, 4GB of system memory, 500GB hard drive, DVD burner, and more.

1.If you often have video chats with others, you’d better buy ________.

A. Dell Inspiron 15R

B. 17.3-inch HP Pavilion laptop

C. Toshiba’s 15.6-inch Satellite laptop

D. Sony’s 15.5”VAIO E Series laptop

2.Toshiba’s satin black 15.6-inch Satellite laptop is different from others in that ________

A. it has three USB ports

B. its hard drive is 500GB

C. its system memory is 4GB

D. it has a larger keyboard

3.What would be the best title for this passage?

A. The development of technology.

B. Several school laptops for students

C. The changes of the modern computers

D. The future laptops for the young generation

查看答案和解析>>

同步練習冊答案